Previous studies demonstrated that the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D), toxicity may be due to cell death by apoptosis. 2,4-D is approved to be associated with many disorders especially neurotoxicity. FTIR spectroscopy and transmission electron microscopy were used to investigate the neurotoxicity induced by LD50 dose of 2,4-D onto the cerebellum rat brain tissue. In response t...

A literature review of electrochemical impedance spectroscopy (EIS) analysis of proton exchange membrane fuel cells (PEMFCs) is presented. Emphasis is placed on the papers that analyse the impedance response of the cathode and anode half-cells of the PEMFCs based on a continuum-mechanics approach. The other type of analysis, which is based on the equivalent-circuits approach, is addressed for c...

The electronic structure and electron affinities of higher chlorine oxide radicals ClOx „xÄ2 – 4... from photoelectron spectroscopy of ClOx À anions Xue-Bin Wang and Lai-Sheng Wang Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99352 and W. R. Wiley Environmental Molecular Sciences Laboratory, MS K8-88, Pacific Northwest National Laboratory, P.O....

Photoelectron spectroscopy of mono-niobium carbide clusters NbCn À „nÄ2 – 7...: Evidence for a cyclic to linear structural transition Hua-Jin Zhai, Shu-Rong Liu, Xi Li, and Lai-Sheng Wang Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99352 and W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-8...

Poly(l-glutamate) (PGlu) was modified with a second-generation dendron to obtain the dendronized polyglutamate, P(Glu-D). Synthesized P(Glu-D) exhibited a degree of polymerization (DPn) of 46 and a 43% degree of dendronization. Perfect agreement was found between the P(Glu-D) expected structure and the results of nuclear magnetic resonance spectroscopy (NMR) and size-exclusion chromatography co...

A 22-residue synthetic peptide encompassing the calmodulin (CaM)-binding domain of skeletal muscle myosin light chain kinase was studied by two-dimensional NMR and CD spectroscopy. In water the peptide does not form any regular structure; however, addition of the helix-inducing solvent trifluoroethanol (TFE) causes it to form an alpha-helical structure. The proton NMR spectra of this peptide in...

Deinococcus radiodurans is an extreme bacterium known for its high resistance to stresses including radiation and oxidants. The ability of D. radiodurans to reduce Au(III) and biosynthesize gold nanoparticles (AuNPs) was investigated in aqueous solution by ultraviolet and visible (UV/Vis) absorption spectroscopy, electron microscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), Four...

The triplet and singlet states of the ketenylidene ~CCO! radical are investigated using fast radical beam photofragment translational spectroscopy, in which CCO is generated by laser photodetachment of CCO and subsequently photodissociated, and anion photoelectron spectroscopy. In the photodissociation experiment, two bands in which the upper state of CCO predissociates are studied. Photodissoc...